Glueball masses in U(1) LGT using the multi-level algorithm
P. Majumdar, Y. Koma, M. Koma
TL;DR
This paper demonstrates the use of the multi-level algorithm to accurately measure glueball masses in 4D compact U(1) gauge theory, showcasing its effectiveness for pure gauge theories.
Contribution
It applies and evaluates the multi-level algorithm for measuring glueball masses in U(1) lattice gauge theory, highlighting its capabilities for pure gauge observables.
Findings
Reliable measurement of glueball masses achieved
Multi-level algorithm effectively reduces statistical errors
Method applicable to other pure gauge theories
Abstract
The multi-level algorithm allows, at least for pure gauge theories, reliable measurement of exponentially small expectation values. The implementation of the algorithm depends strongly on the observable one wants to measure. Here we report measurement of glueball masses using the multi-level algorithm in 4 dimensional compact U(1) theory as a case study.
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